19989496 has 16 divisors (see below), whose sum is σ = 38352600. Its totient is φ = 9762144.

The previous prime is 19989493. The next prime is 19989499. The reversal of 19989496 is 69498991.

It is an interprime number because it is at equal distance from previous prime (19989493) and next prime (19989499).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (19989493) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 28711 + ... + 29398.

Almost surely, 2^19989496 is an apocalyptic number.

It is an amenable number.

19989496 is a deficient number, since it is larger than the sum of its proper divisors (18363104).

19989496 is a wasteful number, since it uses less digits than its factorization.

19989496 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 58158 (or 58154 counting only the distinct ones).

The product of its digits is 1259712, while the sum is 55.

The square root of 19989496 is about 4470.9614178608. The cubic root of 19989496 is about 271.3942329334.

The spelling of 19989496 in words is "nineteen million, nine hundred eighty-nine thousand, four hundred ninety-six".